In [1]:
divisors(900)
Out[1]:
[1,
 2,
 3,
 4,
 5,
 6,
 9,
 10,
 12,
 15,
 18,
 20,
 25,
 30,
 36,
 45,
 50,
 60,
 75,
 90,
 100,
 150,
 180,
 225,
 300,
 450,
 900]
In [2]:
sum(divisors(900))
Out[2]:
2821
In [3]:
number_of_divisors(900)
Out[3]:
27
In [4]:
number_of_divisors(900) == len(divisors(900))
Out[4]:
True